20686472

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{19739}}^1$

素因数の和:19876

約数の個数: 16

約数和(自身を含む): 39085200

約数和(自身を除く): 18398728

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 19739, 39478, 78956, 157912, 2585809, 5171618, 10343236, 20686472]

約数ペア:

[(1, 20686472), (2, 10343236), (4, 5171618), (8, 2585809), (131, 157912), (262, 78956), (524, 39478), (1048, 19739)]